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Finding the Fourth Proportional to 375.54, 562.40 and 259.66

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Solution

The fourth proportional to 375.54, 562.40 and 259.66 is: 388.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.54 : 562.40 = 259.66 : x
  2. Step 2: Convert to fraction form
    375.54/562.40 = 259.66/x
  3. Step 3: Cross multiply
    375.54x = 562.40 × 259.66
  4. Step 4: Simplify right side
    375.54x = 146,034.14
  5. Step 5: Solve for x
    x = 146,034.14/375.54
  6. Step 6: Final answer
    x = 388.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.